5.8.0 --------------------- - Add a new onBreak overload that provides the prior state on a transition to an open state - Bug fix: RelativeTtl in CachePolicy now always returns a ttl relative to time item is cached

Other changes include: - Add PolicyKeys and context to all policy executions, for logging and to support later introduction of policy events and metrics. - Add CancellationToken support to synchronous executions. - Add some missing ExecuteAndCapture/Async overloads. - Remove invalid ExecuteAsync overloads taking (but not making use of) a CancellationToken - Provide .NET4.0 support uniquely through Polly.NET40Async package - Retire ContextualPolicy (not part of documented API; support now in Policy base class) - Discontinue .NET3.5 support

Earlier versions ---------------- For versions prior to v5.0, please see the detailed ChangeLog on the Polly project site.